Hopefully someone on this forum will be able to help me out with this.
I have a 1978 Chevrolet K20 3/4 ton 4WD pickup. It has 8 lug wheels. I found a great deal on some stock wheels and tires off of a 2005 Chevrolet Silverado 2500 (also 8 lug).
My question is - will the 2005 wheels fit on my 1978?

I called the local Chevrolet dealer and the parts guys said 'Absolutely not,' but he couldn't really tell me why exactly.
The local tire/wheel place said 'Sure,' that the bolt pattern hasn't changed.

Any help is appreciated.